Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the
filing fee is calculated and state how it was determined):

(4)

Proposed maximum aggregate value of transaction:

(5)

Total fee paid:

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Fee paid previously with preliminary materials.

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Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously.
Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

(1)

Amount previously paid:

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Form, Schedule or Registration Statement No.:

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Shareholder Meeting to Be Held on May 18, 2012.

CABLEVISION SYSTEMS CORPORATION

Meeting Information

Meeting
Type: Annual Meeting

For holders as of: March 28, 2012

Date: May 18, 2012 Time: 10:00 AM

Location: Companys Executive Offices

1111 Stewart Avenue

Bethpage, New York

1111 STEWART AVENUE

BETHPAGE, NY 11714-3581

You are receiving this communication because you
hold shares in the above named company.

This is not a ballot. You cannot use this notice to
vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see
reverse side).

We encourage you to access and review all of the
important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain

proxy materials and voting instructions.

 Before You Vote 

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

NOTICE AND PROXY STATEMENT
ANNUAL REPORT ON FORM 10-K

How to View
Online:

Have the information that is printed in the box marked by the arrow
(located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a
PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please
choose one of the following methods to make your request:

1) BY INTERNET:

www.proxyvote.com

2) BY TELEPHONE:

1-800-579-1639

3) BY E-MAIL*:

sendmaterial@proxyvote.com

* If requesting materials by e-mail, please send a blank e-mail with the information that is
printed in the box marked by the arrow (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 4, 2012 to
facilitate timely delivery.

 How To Vote


Please Choose One of the Following Voting Methods

Vote In Person: Many shareholder meetings have attendance requirements including, but not
limited to, the possession

of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for
meeting attendance. At the meeting, you will need to request a ballot to vote these shares.

Vote By Internet: To vote
now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow
available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items

The Board of Directors recommends you vote FOR each of the following candidates:

1. Election of the following nominees as Directors:

Nominees:

01) Zachary W.
Carter

02) Thomas V. Reifenheiser

03) John R. Ryan

04) Vincent Tese

05) Leonard Tow

The Board of Directors recommends you vote FOR the following proposal:

2. To
ratify the appointment of KPMG LLP as independent registered public accounting firm of the Company for fiscal year 2012.

In their discretion, the proxies are authorized to vote upon such other business as may properly come before the meeting.

Directions to Cablevisions corporate headquarters:

From the West: NYC and North Shore of Nassau County

Northern State Parkway East to Exit 36 South - South Oyster Bay
Road. Continue on South Oyster Bay Road, passing Old Country Road then make a left onto Stewart Avenue. Straight on Stewart until 1111 Stewart Avenue on right.

Long Island Expressway East to Exit 43. Make right at light onto South Oyster Bay Road. Continue straight passing Old Country Road and then make a left
onto Stewart Avenue. Straight on Stewart until 1111 Stewart Avenue on right.

From the East: Toward NYC from Suffolk
County

Northern State Parkway West to Exit 36 South - South Oyster Bay
Road. Continue straight passing Old Country Road and then make a left onto Stewart Avenue. Straight on Stewart until 1111 Stewart Avenue on right.

Long Island Expressway West to Exit 43 - South Oyster Bay Road. Make left at light onto South Oyster Bay Road. Continue straight passing Old Country Road
then make left onto Stewart Avenue. Straight on Stewart until 1111 Stewart Avenue on right.